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While many people worry about outdoor air quality, statistics show that they actually should be more concerned about indoor air quality (IAQ). IAQ is the measure of harmful pollutants discovered within or around your home. The EPA ranks IAQ as one of the top five public health risks.

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Air Filter FAQ

Can I use the same air filter for both heat and AC?

Yes, both AC filters and furnace filters are the same thing. We categorize filters based on their intended use to make filter shopping easier for the customer. During the summer months you are more likely to search for AC filters. While during colder winter months you are looking to buy furnace filters. A good tip for remembering when to change your filters is to replace them at the start of each new season.

Which direction does the air filter go?

Always point the arrow on the box in the direction of airflow. If you are unsure the direction of airflow turn on the system fan. Do not remove the old filter before checking airflow as this might allow dirt or debris to escape.

What is air filter MERV rating?

The Minimum Efficiency Reporting Value (MERV) is used by manufacturers to explain how efficent the air filter is at trapping airborne particles. A higher MERV rating means cleaner air but reduced air flow. MERV 8 filters capture 80% of airborn particles like pollen, dust mites, mold spores, and pet dander down to 3 microns in size. MERV 11 air filters capture up to 95% of the above mentioned airborne particles down to 1 micron in size. If you choose a MERV 13 filter expect greatly diminished airflow but improved filtration of bacteria, tobacco smoke, and cooking oil down to 0.3 micorn in size. Before you choose a MERV rating check with your HVAC manufacturer to see what your system is designed to handle. Picking the wrong filter can impact air flow and reduce equipment life.

When to change the air filter in your house?

Replace your air filters every 3 months. You may need to replace your filters more frequently depending on air quality. If you are unsure about indoor air quailty check the filter monthly. If you notice the filter material is greatly discolored or noticably dirty change out the filter. Failing to replace air filters as recommened can lead to reduced system efficieny, greater energy costs, and poor air quailty.

Which air filter is best for allergies?

If you have respiratory problems caused by pollen, dust, mold, or pet dander a MERV 11 filter can help reduce the severity of aliments caused by allergies. If you are sensitive to smoke from cooking or tobacco a MERV 13 filter is recommend. For many allergy sufferers it is recommend you install filters to process both supply and return air. Before you choose a MERV rating check with your HVAC manufacturer to see what your system is designed to handle. Picking the wrong filter can impact air flow and reduce equipment life.

Which air filter is best for my home?

Your choice in air filter should depend on needs. MERV 8 filters are perfect if you have no pets and allergies are not a serious concern. MERV 11 filters are recommend for occasional allergy sufferers and homes with pets. A MERV 13 filter should be used if allergies are a serious concern and there are tobacco smokers in the house.

Where are they made?

Filtersfast brand air filters are proudly made in America. While the manufacturing location of products can vary from company-to-company, Country of Origin laws require that most products manufactured outside of America bear labeling that tells consumers where the product is made. This label should be visable on the product itself or the packaging in which it arrived.

Are the home air filters electrostatically charged?

Yes, Filtersfast, Filtrete, Carrier, among many other air filter brands use an electrostatically charged filter media. Fiberglass air filters are far less common today and were never designed to improve air quality, rather they protect HVAC systems from large dirt and debris.

General Aire furnace filtration and AC filters are used to maintain system efficiency and will reduce household air pollutants.

 

General Aire Air Filters Furnace Filters full product list:


GeneralAire 6FM1625 - Part 4541 MERV 11 16x25x5 Furnace Filter
(4541)

The GeneralAire 6FM1625 - Part 4541 ReservePro MERV11 16x25x5 Furnace Filter is a high-efficiency MERV 11 filter with more surface area for a longer filter life.


Out of stock
GeneralAire 6FM1625 - Part 4541 MERV 11 16x25x5 Furnace Filter
As Low As: $20.95
Retail: $29.99
You Save 30%!

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GeneralAire 4556 6FM2020 MERV11 Air Filter 20x20x5
(4556)

This is the GeneralAire 4556 6FM2020 MERV 11 Air Filter 20x20x5.


In stock! Ships in 1 business day.
GeneralAire 4556 6FM2020 MERV11 Air Filter 20x20x5
As Low As: $20.95
Retail: $49.99
You Save 58%!

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GeneralAire 4368 20"x25"x4 MERV 11 Filter Media
(4368)

The GeneralAire 4368 is the correct replacement filter for the following air cleaner systems:


In stock! Ships in 1 business day.
GeneralAire 4368 20"x25"x4 MERV 11 Filter Media
Our Price: $32.99
Retail: $49.99
You Save 34%!

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GeneralAire 4367 GA100A11 MERV 11 Filter 20 x 20
(4367)

This is the GeneralAire 4367 GA100A11 MERV 11 Filter 20 x 20.


In stock! Ships in 1 business day.
GeneralAire 4367 GA100A11 MERV 11 Filter 20 x 20
Our Price: $39.99
Retail: $49.99
You Save 20%!

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GeneralAire 4365 MERV11 Filter 16x20
(4365)

The General Aire 4365 16x20 MERV11 Filter Media is the correct replacement air cleaner filter for the following Honeywell air cleaner systems:


In stock! Ships in 1 business day.
GeneralAire 4365 MERV11 Filter 16x20
Our Price: $35.99
Retail: $41.99
You Save 14%!

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GeneralAire 4366 GA100A29 Filter MERV 11 16 x 25
(4366)

This is the GeneralAire 4366 GA100A29 Filter MERV 11 16 x 25.


In stock! Ships in 1 business day.
GeneralAire 4366 GA100A29 Filter MERV 11 16 x 25
Our Price: $38.99
Retail: $59.99
You Save 35%!

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GeneralAire AC-1 Filter 20x24x5 MERV 13 (2 PACK)
(FFC20245GAM13)

The GeneralAire AC-1 Air Filter 20x24x5 is a cost-effective compatible version of the genuine 20x24x5 General Filter AC-1 Air Filters.


In Stock! Ships in 22 to 23 business days.
GeneralAire AC-1 Filter 20x24x5 MERV 13 (2 PACK)
Our Price: $62.00
Retail: $79.99
You Save 22%!

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GeneralAire AC-1 Filter 20x24x5 MERV 8 (2 PACK)
(FFC20245GAM8)

GeneralAire AC-1 Air Filter 20x24x5 is an economical alternative for the OEM GeneralAire AC-1 Air Filter 20x24x5. This furnace filter is part of the GeneralAire AC-1 Series of Residential Air Cleaner Replacement Filters.


In Stock! Ships in 3 to 4 business days.
GeneralAire AC-1 Filter 20x24x5 MERV 8 (2 PACK)
Our Price: $58.99
Retail: $79.99
You Save 26%!

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Filters Fast - General Aire Air Filters Furnace Filters

" Just to express my complete satisfaction with your ordering process and, of course, great pricing. When I need a replacement of refrigerator or HVAC filters, I'll be contacting you again. " - Frank, Corona, CA
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